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  2. Photochemical smog - Wikipedia

    en.wikipedia.org/wiki/Smog

    Photochemical smog, as found for example in Los Angeles, is a type of air pollution derived from vehicular emission from internal combustion engines and industrial fumes. These pollutants react in the atmosphere with sunlight to form secondary pollutants that also combine with the primary emissions to form photochemical smog .

  3. Pollution in California - Wikipedia

    en.wikipedia.org/wiki/Pollution_in_California

    A view of Los Angeles covered in smog. Pollution in California relates to the degree of pollution in the air, water, and land of the U.S. state of California.Pollution is defined as the addition of any substance (solid, liquid, or gas) or any form of energy (such as heat, sound, or radioactivity) to the environment at a faster rate than it can be dispersed, diluted, decomposed, recycled, or ...

  4. Beverly Hills Post Office - Wikipedia

    en.wikipedia.org/wiki/Beverly_Hills_Post_Office

    Beverly Hills Post Office (BHPO) is a neighborhood in Los Angeles, California, that is adjacent to the city of Beverly Hills.Because the United States Postal Service in Beverly Hills serves the neighborhood, residents have a Beverly Hills mailing address with zip code 90210, while other wealthy neighborhoods Bel Air and Holmby Hills have Los Angeles mailing addresses.

  5. Smog check cheaters busted, feds say; California ring ... - AOL

    www.aol.com/news/smog-check-cheaters-busted-feds...

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  6. As LA schools prepare to reopen, toxic ash raises concerns

    www.aol.com/news/la-schools-prepare-reopen-toxic...

    As parents in Los Angeles County prepare to send their children back to the schools in wildfire impacted areas that are still standing, parents are wondering how safe they are.

  7. Los Angeles smog woes worsen as U.S. EPA threatens to ... - AOL

    www.aol.com/news/los-angeles-smog-woes-worsen...

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  8. Ground-level ozone - Wikipedia

    en.wikipedia.org/wiki/Ground-level_ozone

    In June to August, photochemical ozone production causes very high concentrations over the East Coast of the US and China. Ground-level ozone ( O 3 ), also known as surface-level ozone and tropospheric ozone , is a trace gas in the troposphere (the lowest level of the Earth's atmosphere ), with an average concentration of 20–30 parts per ...

  9. Los Angeles air quality improves from wildfires' hazardous levels

    www.aol.com/news/los-angeles-air-quality...

    Smoke from several wildfires in metro Los Angeles negatively affects the air quality of a population of about 18 million people. BY THE NUMBERS: Air quality in Los Angeles was at "moderate" levels ...